Microsoft is aware of the time zone change for Volgograd Oblast, Russia. Volgograd will permanently switch from UTC+03:00 to UTC+04:00 on October 28, 2018. A new Windows time zone will be created to reflect this change.
Our official policy statement can be found on the site at http://microsoft.com/time.
Though we plan to release a data update, there is insufficient lead time before this change goes into effect. Therefore, we offer the following guidance as a temporary workaround until such an update can be properly created, tested, distributed, and installed.
Interim guidance for Volgograd
Until an update is made available, we recommend our customers temporarily switch to time zone “(UTC+04:00) Saratov” beginning October 28, 2018 at 02:00 local time. Selecting this time zone will correctly reflect the current local time in Volgograd.
Once an update is made available, we recommend customers to switch to the new time zone that will be introduced for Volgograd, which will appear as “(UTC+04:00) Volgograd”. Selecting this time zone will correctly reflect the time in Volgograd, for events both before and after this change.